IDY10220 SECURITE High Seas Forecast for Western METAREA 10 12S TO 30S BETWEEN 90E AND 125E, AND 30S TO 50S BETWEEN 80E AND 129E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 2300 UTC 24 August 2026 Part 1 Warnings Refer to latest warnings for boundary of affected area and type of weather system. Melbourne Gale Warning 9. Part 2 Situation at 241800 UTC Cold front [1] 35S110E 44S118E 50S119E. Forecast cold front [1] 39S123E 45S129E at 251800UTC and moving east of area thereafter. Low 967hPa near 50S101E. Forecast low 989hPa near 47S118E at 260000UTC. Forecast cold front [2] entering area from west near 41S080E 50S084E at 250600UTC, then near 42S097E 50S098E at 260000UTC. Part 3 Forecast Refer to latest warnings for details of the area affected. South of line 40S080E 34S115E 42S129E outside warning areas: Westerly quarter winds tending northwesterly quarter within 180nm east of cold front [1], within 360nm east of cold front [2], shifting westerly quarter west of front [1] and turning clockwise within 360nm of low. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. Remainder: Winds not exceeding 25 knots. Slight to moderate seas. Low to moderate swell north of line 13S090E 28S114E. Rain areas, scattered showers and isolated thunderstorms mostly within 240nm of fronts, within 180nm of low and within 60nm of line 23S096E 34S115E. Visibility reducing below 2nm in precipitation. Please be aware Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height. WEATHER MELBOURNE The next routine forecast will be issued at 09:00 UTC Tuesday.